CN1319069A - Bobbin holder, thread winder, thread packagemaking device, thread winding method, and thread packagemaking method - Google Patents

Abstract

A bobbin holder of a thread winder, comprising a holder main body, a bobbin holding operation body, elastic bodies deforming according to the movement of the bobbin holding operation body, spacers maintaining the elastic bodies at specified intervals and transmitting the motion of the bobbin holding operation body to the elastic bodies, and a cylindrical supporting body installed on a turret member and supporting a drive shaft rotatably, the holder main body further comprising a boss part for the connection with the drive shaft and a hollow part storing the bobbin holding operation body and cylindrical supporting body on both sides of a boss part, the boss part further comprising an annular projected part projected toward the inside of the hollow part, and a portion where the amount of increase in inner diameter (d1) of the boss part and the amount of increase in outer diameter (d2) of the drive shaft due to a centrifugal force at the time of rotation satisfy the relation, (d1) - (d2) < 20 mu m, is provided at least one position on the boss part.

Description

Bobbin creel, yarn winding machine, device for manufacturing yarn reel, method for winding yarn and method for manufacturing yarn reel

technical field

The present invention relates to a bobbin holder capable of winding up yarn at a take-up speed of not less than 5000 m/min without vibration, and to a winding machine having such a bobbin holder, for producing yarn Apparatus for rolling bags, method of winding yarn and method of manufacturing yarn rolling bags.

technical background

Typically, a coiling machine as shown in Figure 1 is used for winding several strands of yarn, which has been made into filaments by a spinneret, on bobbins supported by several bobbins.

This coiler includes: two bobbin holders 2 (2a, 2b), which are rotatably mounted on the turret element, which is rotatably arranged in the frame 1; reciprocating device 4, which is arranged on the machine On the frame element 3, the frame element is arranged to move vertically in the frame 1; the pressure roller 5 is rotatably mounted on the frame element 3 or the reciprocating device 4, so that the pressure roller 5 is arranged close to the reciprocating device 4 .

Different from the above-mentioned coiling machine, there is a coiling machine in which the turret element equipped with the bobbin holder moves between the coiling position and the waiting position along the rails arranged on the frame. There is also a coiler whose bobbin holder is arranged in the frame.

The above-mentioned bobbin holder has a shape as shown in FIG. 7 . The bobbin holder 2 includes: a drive shaft 11; a bobbin holder body 12 on which the bobbin 100 used for the winding package 51 is installed; a bobbin support and operating element 13 reciprocating at the front end; When the bobbin support and operating element 13 moves to act on the elastic element with an axial force, the elastic element is compressed and deformed in the radial direction to clamp the bobbin 100; spacer 15, which holds the elastic element at a predetermined interval 14, and the bobbin support and the movement and force of the operating element 13 act on the elastic element 14, so that the elastic element 14 is deformed; the cylindrical support element 10, which is integrated with the turret element to pass through the bearing 16 The drive shaft 11 is rotatably supported. The bobbin holder body 12 has hollows 12a and 12b for accommodating the cylindrical support element 10 and the bobbin support and handling element 13 . The bobbin supporting and operating element 13, the elastic element 14 and the spacer 15 are all arranged on the bobbin frame body 12, and the bobbin frame body 12 is matedly connected with the drive shaft 11 at the boss portion 12c.

The drive shaft 11 has a hole 11a for supplying compressed air, and is connected at one end thereof to a drive motor (not shown) through a coupling 19 to rotate the drive shaft 11 . The bobbin supporting and operating element 13 includes: a piston head 17, which has a piston portion 17a, which is movably arranged in the hollow portion 12a formed at the front end of the bobbin holder body 12; a cylindrical portion 17b, The cylindrical portion is movably installed in the front end of the bobbin frame body 12; the spring 18 is arranged between the piston head 17 and the hollow portion 12a, so that the piston head 17 can usually be pushed toward the rear end side of the bobbin frame body 12 ( support side).

In the above structure, the drive shaft 11 is mounted on the boss portion 12c of the bobbin holder body 12 to be connected with it. When the drive shaft 11 rotates at a speed not lower than 5000m/min, the bobbin holder body 12 is under centrifugal force. Under the influence, it expands to the state shown by the dotted line in the figure, and as a result, the hole diameter of the boss portion 12c matched with the drive shaft 11 also expands to the state shown by the dotted line in the figure. Therefore, the following problems will occur. For example, if it is intended to ensure a sufficient fit connection at a speed of 8000m/min, it is necessary to ensure that the fit interference is not less than 20μm when the coiler is stopped. However, if this structure is used, maintenance It is impossible to disassemble. On the contrary, when the fitting connection is arranged to be repairable, but in the case of rotating at a speed of 8000m/min, there will be a large gap between the boss portion 12c of the bobbin holder body 12 and the drive shaft 11, resulting in a loose fitting state. Then, slipping occurs at the boss portion 12c and vibration occurs, and fretting abrasion occurs due to the vibration, making it impossible to disassemble the boss portion 12c.

In addition, when the yarn is taken up by the above-mentioned yarn winding machine, problems such as large vibration due to slipping at the boss portion 12c occur, yarn disorder occurs, the shape of the yarn bag deteriorates, As a result, the product failed.

Summary of the invention

The present invention has successfully solved the above-mentioned problems. It is an object of the present invention to provide a bobbin holder which is easy to mount and detach, and which can take up yarn excellently without Friction and wear will be caused by vibration, and the yarn roll bag can obtain a good appearance. The purpose of the present invention is also to provide a yarn winding machine with such a bobbin holder, a yarn roll bag manufacturing equipment, and a yarn roll bag. Thread winding method and yarn bobbin manufacturing method.

The bobbin frame of the present invention includes a driving shaft and a bobbin frame body, and the bobbin for winding the yarn is installed on the bobbin frame, wherein the bobbin frame body includes a boss portion, and the boss portion and the drive The shaft is connected, and the bobbin frame body has a hollow part at both ends of the boss part. The boss part includes a flange, and the flange extends to at least one hollow part at one end of the connection part connected with the drive shaft.

In addition, the bobbin holder of the present invention includes a drive shaft and a bobbin holder body, and the bobbin for winding the yarn is installed on the bobbin holder, wherein the bobbin holder body includes a boss portion, and the boss portion Connected with the drive shaft, the boss portion includes at least a part, wherein, satisfying the relationship (d ₁ )-(d ₂ )<20μm, where (d ₁ ) is the inner diameter of the boss portion caused by the centrifugal force generated during rotation (d ₂ ) is the increase in the outer diameter of the drive shaft.

It is recommended that the yarn take-up speed on the bobbin holder should not be lower than 5000m/min.

The yarn winding method, yarn winding machine, yarn package manufacturing equipment, and yarn package manufacturing method of the present invention are characterized in that the above-mentioned bobbin holder is used for yarn winding and yarn package production.

Brief introduction to the drawings

Preferred embodiments of the present invention will be described with reference to the accompanying drawings, in which

Fig. 1 is the schematic diagram of a coiler;

Fig. 2 is a schematic view showing an embodiment of a yarn bag manufacturing equipment;

Fig. 3 is a schematic cross-sectional view of the first embodiment of the bobbin holder of the present invention;

Fig. 4 is the schematic cross-sectional view of the second embodiment of the bobbin holder of the present invention;

Figure 5 shows the relationship between speed and (d ₁ )-(d ₂ ) values when the flange thickness of the bobbin holder is set to 5 mm and the length of the flange is changed;

Fig. 6 shows the relationship between the length of the flange and the value of (d ₁ )-(d ₂ ) when the speed of the bobbin holder is set to 10000 m/min and the thickness of the flange is changed;

Fig. 7 is a schematic diagram of a sectional view of a conventional bobbin holder.

The best way to practice the invention

Fig. 2 is a schematic view showing an embodiment of a yarn bag manufacturing apparatus comprising a yarn winder 6 provided with a bobbin creel 2 according to the invention. Yarn roll bag manufacturing equipment 50 is as shown in Figure 2, and this equipment comprises: spinneret (spinning machine) 20, and this spinneret comprises limiting pump (metering pump) and spinneret, is used for molten polymer is sprayed into Yarn; The first winding roller 21 is used to accept the sprayed yarn at a predetermined speed; the second winding roller is used to accept the sprayed yarn; Yarn dividing and guiding device 23; Tension sensor 24; Swing fulcrum guide (swing fulcrum guide) 25 and yarn winder 6.

The yarn winding machine 6 comprises: a reciprocating device 4; two bobbin holders 2 (2a and 2b); a turret element 7 on which the bobbin holders 2 (2a and 2b) are rotatably mounted; and Pressure contact roller 5.

Fig. 3 is a schematic cross-sectional view of the first embodiment of the bobbin holder 2 of the coiler of the present invention. The bobbin holder 2 includes: a drive shaft 11; a bobbin holder body 12; a bobbin support and operating element 13, which reciprocates at the front end; an elastic element 14, which applies a shaft when the bobbin holder support and operating element 13 moves When the force is applied, the elastic element is compressed and radially deformed; the spacer 15 has the function of keeping the elastic element 14 at a predetermined distance, and transmitting the movement and force of the bobbin holder support and operating elements to the elastic element, so that the elastic element 14 deformation; and a cylindrical support element 10 which is provided in one piece with the turret element 7 and which, by means of a bearing 16 , rotatably supports the drive shaft 11 . The bobbin holder body 12 includes hollow parts 12a and 12b, in which the cylindrical support element 10 and the bobbin support and operation element 13 are installed; The boss portion 12c is mated with the drive shaft 11 .

In the bobbin holder body 12, it is required to have such a coupling force (interference fit) between the boss portion 12c and the drive shaft 11 that when the coiler rotates at a high speed and the outer peripheral portion of the boss portion 12c radially rotates due to centrifugal force When expanding outward, no gap (chattering) occurs due to the expansion of the inner peripheral portion of the boss portion 12c.

On the other hand, when replacing the bearing 16 of the bobbin holder 2, the bobbin holder body 12 and the drive shaft 11 need to be disassembled. Problem with drive shaft 11.

Usually, when the bobbin holder body 12 and the drive shaft 11 are disassembled, the bobbin holder body 12 is heated with a heater, and the drive shaft 11 is pushed out axially with a hydraulic press, but in order to disassemble the bobbin holder body 12 and the drive shaft 11 , it is required that the interference between the bobbin holder body 12 and the drive shaft 11 is not greater than 20 μm.

Therefore, at the connecting end of the boss portion 12c, where the drive shaft 11 is set in the bobbin holder body 12, there are provided annular flanges 12c-1 and 12c-2, which protrude in the axial direction and enter the boss portion. Cavity portions 12a and 12b are formed at both ends. In this connection, either 12c-1 or 12c-2 can be set.

The protruding length dimension (L) of the annular flanges 12c-1 and 12c-2 is required to be determined by not less than 0.1 times the inner diameter (d) of the connection between the boss portion 12c and the drive shaft 11, and the annular flanges 12c-1 and 12c The outer diameter (D) of -2 is determined to be no greater than twice the inner diameter (d) of the boss portion 12c. When the protruding length dimension (L) and outer diameter dimension (D) exceed the predetermined range, it is impossible to obtain the necessary connection force when rotating at high speed, and vibration will be generated like the traditional bobbin holder, and friction and wear caused by vibration .

In the above-mentioned bobbin holder body 12, when the protruding length (L) of the annular flanges 12c-1 and 12c-2 is made to be 10mm, the outer diameter dimension (D) is 45mm, and the inner diameter (d) of the boss portion 12c is 35mm, even in the case of rotating at a speed of 8000m/min, there is no high-intensity centrifugal force acting on the outer peripheral portions of the annular flanges 12c-1 and 12c-2 of the boss portion 12c, and at the same time, the annular flange 12c-1 and 12c-2 are not affected by the expansion of the inner diameter portion, which is caused when the outer peripheral portion of the boss portion 12c expands radially, therefore, even if the interference amount is not more than 20 μm, the flange 12c-1 and 12c-2 change little in inner diameter (rarely create a gap), so a loose fit connection is unlikely to occur. Since there is no gap between the boss portion 12c and the drive shaft 11, there is no possibility of large vibrations, or no possibility of frictional engagement due to vibrations so that the connected elements cannot be disassembled.

For this connection, the bobbin holder body 12 and the drive shaft 11 were used to rotate separately to study the corresponding changes. The results are as follows: for the bobbin holder body 12, the longer the protruding length (L) is, the longer the outer diameter (D) The smaller the reduction, the smaller the change in the inner diameter of the boss portion 12c becomes. Depending on the selected dimensions, there may be a reduction in the inner diameter near the free-side end of the annular flange in the rotating case compared to the non-rotating case.

On the other hand, the amount of increase in the outer diameter of the drive shaft 11 increases uniformly according to the increase in the rotational speed. _That is to say, there is such a possibility that the difference (d 1 ) between the increase (d ₁ ) of the inner diameter of the bobbin holder body 12 caused by the centrifugal force and the increase (d ₂ ) of the drive shaft 11 outer diameter during rotation - (d ₂ ) becomes a negative value.

In the present invention, the increase of the inner diameter of the boss portion 12c is defined as the change of the inner diameter at the minimum value of the inner diameter, and the increase of the outer diameter of the drive shaft 11 is defined as the largest outer diameter of the connection area with the bobbin holder body 12 change in outer diameter.

Tables 1 and 2 below show the results of numerical analysis performed by the finite element method on a computer.

Table 1 and Figure 5 show the relationship between bobbin speed and (d ₁ )-(d ₂ ) values, where the thickness t of the annular flanges 12c-1 and 12c-2 is set to 5mm, and the length of the flange portion L changes. It can be seen from Table 1 and Figure 5 that the longer the flange length, the smaller the increase in diameter becomes.

Table 1 ((d ₁ )-(d ₂ )(μm)t=5mm) L (mm) 5 10 15 20 25 speed 5000 3.68 0.97 0.05 0.23 0.62 8000 9.66 2.58 0.13 0.59 1.62 10000 14.56 3.92 0.20 0.90 2.46

Table 2 and Figure 6 show the relationship between the flange length (L) and the value of (d ₁ )-(d ₂ ) when the bobbin holder 2 rotates at a speed of 10,000 m/min, and the ring flange 12c- 1 and 12c-2 Variation of thickness t. As shown in Table 2 and Figure 6, the smaller the thickness of the flange, the smaller the increase in diameter.

Table 2 ((d ₁ )-(d ₂ )(μm) speed=10,000m/min) Flange thickness t(mm) 2.5 5 10 15 Length (mm) 5 10.70 14.56 17.30 19.06 10 -0.79 3.92 9.24 12.78 15 0.12 0.20 4.24 8.10 20 2.24 0.90 2.56 5.74 25 2.72 2.46 2.66 4.92

As described above, regarding the annular protrusion whose inner diameter seldom changes even at high speed rotation, at least one annular protrusion can be provided in the boss portion 12c, needless to say that the number and positions of the annular protrusions are not particularly limited.

Here, the boss portion 12c of the bobbin holder body 12 is different from the flanges 12c-1 and 12c-2, and when the coiler rotates at a speed not lower than 5000m/min, it is subjected to a strong centrifugal force and does not The connection between the bobbin holder body 12 and the drive shaft contributes, therefore, an undercut groove processing portion (larger diameter portion) 12c-3 is made on the boss portion 12c, as shown in FIG. There may be gaps in the event of a stoppage, but assembly and disassembly are easier. This groove machining may be made on the drive shaft 11 side, or both on the boss portion 12c side and the drive shaft 11 side.

In the above-mentioned embodiment, the motor shaft as the rotational drive and the drive shaft 11 of the bobbin holder 2 are connected to each other through a coupling, however, a structure may be adopted in which the motor shaft and the driving shaft 11 of the bobbin holder 2 The shafts 11 are made integral with each other, or adopt a structure in which the shaft transmitting the rotary motion is arranged between the motor shaft and the drive shaft 11 of the bobbin holder.

Naturally, it is possible to adopt the structure of the present invention, wherein the annular flanges 12c-1 and 12c-2 are formed in the bobbin holder body, using Japanese Unexamined Patent Applications No. 6-1530, No. 8-175753 and No. 4 -159969.

As described above, according to the bobbin holder of the present invention, even if the bobbin rotates at a rotational speed of not less than 5000 m/min, and the interference between the annular flange of the boss portion and the drive shaft is not more than 20 μm, it is impossible to increase the Large clearance and lead to loose fit, so it can avoid vibration due to slipping on the boss part, and can avoid friction and wear caused by vibration so that the boss part cannot be disassembled.

Yarn roll bag manufacturing equipment of the present invention comprises: spinneret, is used for spraying molten polymer filament, cooling device (not shown), is used for cooling the polymer that discharges to generate yarn; Silk coiler, has A winding roller or similar device is used to receive the yarn at a predetermined speed; a coiler is used to wind the yarn delivered from the yarn winding machine onto bobbins respectively arranged on the bobbin holder. In this case, a coiler as shown in Fig. 1 is used.

Naturally, the structures of the above-mentioned coiler and coiler are not particularly limited.

The yarn bag was manufactured using the above-mentioned yarn bag manufacturing apparatus under the following manufacturing conditions. As a result, the above-mentioned effects can be obtained, and a good yarn bag can be obtained, which has an excellent appearance, does not generate large vibrations during winding, and has no yarn disorder.

Yarn pocket formation status

Polymer: Polyester

Variety: 150 denier, 72 silk

tension winding state

Rotation speed of the first take-up roller: 6000m/min

Rotation speed of the second take-up roller: 6000m/min coiling state

Coiling speed: 5920m/min

Bobbin diameter: 126mm

Coil width: 123mm

Coiling form: constant helix angle

Helix angle: 6.0 degrees

Claims (7)

1. A bobbin holder, the bobbin holder includes a driving shaft and a bobbin holder body, the bobbin for winding yarn is installed on the bobbin holder, wherein, the bobbin holder body includes a boss portion, and The table part is connected with the drive shaft, and the bobbin frame body is made into a hollow part at both ends of the boss part. extension. 2. A bobbin holder, the bobbin holder includes a driving shaft and a bobbin holder body, the bobbin for winding yarn is installed on the bobbin holder, wherein, the bobbin holder body includes a boss portion, and The platform part is connected with the drive shaft, and the boss part includes at least one part, wherein the relationship (d ₁ )-(d ₂ )<20 μm is satisfied, where (d ₁ ) is the inner diameter of the boss part due to the centrifugal force generated by the rotation. The resulting increase, (d ₂ ) is the increase in the outer diameter of the drive shaft. 3. Yarn winding machine comprising a bobbin holder as claimed in claim 1 or 2. 4. A method of winding yarn, wherein the yarn is wound using the yarn winding machine according to claim 3 . 5. The method of winding yarn as claimed in claim 4, wherein the yarn is wound at a winding speed of not less than 5000 m/min. 6. An apparatus for manufacturing yarn roll bags, comprising the yarn winder as claimed in claim 3 . 7. A method of manufacturing a yarn reel bag, wherein the yarn reel bag is made on a bobbin using the yarn winding method as claimed in claims 4 to 5.

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